I checked my sparkplug tonight, it is white to very light chalk. Clean with no residue.
The temps have been lower than 40f for the past few months and I want to go slightly richer. Does anyone know the numbers?
Thanks

weetoots

 

i found my plug was white also after a top end run here at sea level,the only thing i have done was put a k&n in it.do you think it would have made tha big of change?? what airbox mods are you going to do?? how do you like the grren spring?? did you try the white?

 

Yes, more air added to the same amount of fuel = a lean mixture. You should try for a cream in coffee color to a semi-dark tan. Black is not good. Have you checked your jet to see what number it is?
I did not do any air box mods yet. But my thought is this: two pieces of 3/4 garden hose with female ends, one to reach the middle and one to reach the back end. Epoxy a male fitting into a drilled hole. Make your attachments and cut to length.
Surely you must have a retired piece of hose and <$10.00 for fittings. Or use heater hose, thicker walls. Use as many hoses as you want. Make that air box look like an octopus.

The green spring is good, it comes in at a higher rpm which give me more throttle control a lower speeds. I did not try the white as they are very close.

weetoots

 

well have you done this to your HO? man i wish i had a extra airbox lyin around so if i doesnt work i could go back to stock. I bet an aftermarket company will be comeing out with a new airbox or a new lid snorkle.what does k&n offer?

 

oh yea what is the next # up from a 152.2?? i think thats what's in my hO now. did you find your alittle lean when you put your k&n on??

 

Included in your paperwork with the ATV should be a build sheet/addendum to the owners manual which should tell you which jet was installed at the time of manufacture.

There was a service bulletin awhile back that said to put in a 157.5 if the standard jet was too lean. My Magnum came with a 165 jet (because it has a larger air intake)

Maybe we can get ChopperBill to post all of the available jet sizes?

If you drill standard sized holes and the modifcation doesn't work you can buy rubber plugs at your local Tru-value hardware store. I would check their inventory before beginning any modifications.

 

Click here and you will be directed to Polaris' Trail tip section which lists Parts Manuals (in pdf form) which you can download. This will list the jet size and is also handy when you take things apart.

I downloaded one for my TrailBlazer then printed it, double side copied it and put it in a loose leaf binder in plastic sheet protectors (so you don't grease it up when using).

 

I have that "pdf" but under carburetor it only shows what is standard. Plus this parts list is for the 2000 and for the right carb you need to look at the scrambler 2000 parts list. They haven't updated for the '01 500ho.
If there is a specific page for the jet sizes, please let me know...

weetoots

 

No not yet, I am waiting for the warranty to run out. Then I want to have a few jets around so I can dial it in.

weetoots